Hi, I feel a bit like yourself. TTC has become a chore and I hate the fact, but sometimes when you have trouble concieving there is little choice sometimes methodical is the only way of making sure that the right time is covered. When you already have children it just adds to the strain, because you have additional constraints eg: teething, nightmares, children in your bed and just generally damn tired. I just hope that when our TTC journey ends either in another pregnancy or just time limit that our life goes back to a more relaxed Bding. I have also been told and passed the message to DH that we need semen for insem then told to BD that night and the next morning. Not a whole lot of fun, one day I hope we will look back at it and laugh. But it can feel a lot like a Mexican stand off!!! I have told DH I don't give a damn if you don't want to, JUST DO IT, he is a good boy, protests and then does the deed.
Maybe concentrate closer to O time, you will have an idea when that is, start a few days out, instead of every second day from the start. No simple answer I wish yourself, myself and the other ladies the best of luck with the journey and hope it is well worth the difficult times.